3-D printing is an increasingly popular technology. A new company solely dedicated to the craft opened in Burlington just a few months ago.

Daniel Riley, co-owner of Blu-Bin, said the company's machines can create any design out of plastic. He said he's printed hundreds of items in Blu-Bin's Church Street workshop since September, including piano keys, a molding of the state of Vermont and plastic silhouettes of people.

Riley said he and his partner are following the 3-D gun controversy. He firmly told WPTZ News Channel 5 that he'd refuse to serve a customer with a firearms design.

"We're not going to be making any guns because we don't want anyone to get hurt with any of our products. That's just the way it is. We don't believe that that should be a use for the technology," said Riley.

He added that he often searches the web for 3-D gun designs to make sure Blu-Bin isn't printing something that could be used as a firearm part.

Meanwhile, in Washington, D.C., Democrats tried to tighten up language in the just-passed congressional bill, but were blocked by Senate Republicans. Sen. Chuck Schumer (D-NY) asked for a more restrictive proposal that would include a requirement that a permanent metal piece be attached to any 3-D printed gun, so it can be detected.